"We have an effective access arrangement in place for GrainCorp that constrains any inappropriate behaviour by them and likewise we should have an effective access arrangement in place to constrain any inappropriate behaviour by ADM.

"So we were never relying on the board members of ADM in the first place."

Nationals Senator Fiona Nash was alarmed after reading ADM's Bidder's Statement to the ASX, which confirmed its plan to replace the board with its own nominees.

"What ADM aren't taking into account is the relationship between the directors of the board and senior management," she said.

"And the relationships between those people and the broader workings of GrainCorp.

"There is certainly a degree of unease about replacing the board and how that would effect those relationships."

GrainCorp is aware of ADM's intentions as outlined in the Bidder's Statement and says it has nothing to add at this stage.

The takeover deal still requires the approval from the Foreign Investment Review Board and the Chinese Ministry of Commerce.